US Patent 7517609 Battery compartment arrangement for remote control blind

A battery compartment arrangement for remote control blind with remote control drive mountable at a mounting end of a headrail of the blind, the remote control drive comprises a case comprising a slit at one end for retaining an inserted portion of a front surface of the headrail, and a plate for dividing an internal space into a first compartment for receiving a motor and a second compartment, the second compartment including a cavity at its one outer end and a notch at its the other outer end; and a battery compartment received in and secured to the second compartment by snapping its pin and latch at both ends into the cavity and the notch respectively. Unfastening the pin and the latch will facilitate a replacement of at least one consumed cell.